The utility model relates to a composite door for railway freight-car, and particularly to a composite door for railway freight-car. The composite door for railway freight-car is provided with a rectangular substrate which is made of an epoxy composite material, and the substrate is inlayed with a frame type metal frame. The material of the substrate is glass fiber reinforced epoxy composite material. The composite door for railway freight-car according to the utility model has the advantages of high strength, light weight, high fatigue strength, excellent breakage safety characteristic and strong corrosion resistance.